ibm.com/developerWorks

Presented by developerWorks, your source for great tutorials

Entity beans as follows:

/**

* Provides a session facade that works with cmp/cmr from EJB 2.0

* based entity beans.

*

* This bean must uses container managed transactions.

* It works with the others entity beans to provide authentication services.

* This bean does not maintain any state; thus, it can be stateless.

*

*

* @ejb.bean name="HRSystem" type="Stateless"

*

local jndi name="HRSystem"

*

*

* @ejb.ejb ref ejb name="DeptBean" view type="local"

* @ejb.ejb ref ejb name="EmployeeBean" view type="local"

*

*/

public class HRSystemBean implements SessionBean {

/**

* Get a list of all the depts.

*

* @return All the group names.

*

* This method is part of the ejb interface.

* @ejb.interface method view type="local"

* @ejb.transaction type="Required"

*/

public String[] getDepts() {

ArrayList deptList = new ArrayList(50);

Collection collection = LocalFinderUtils.findAll("DeptBean");

Iterator iterator = collection.iterator();

while (iterator.hasNext()) {

Dept group = (Dept) iterator.next();

deptList.add(group.getName());

}

return (String[]) deptList.toArray(new String[deptList.size()]);

}

Notice that the Session bean use the same

ejb.bean

tag, but instead of specifying

CMP, it specifies that this is a Stateless bean as follows:

/**

* Provides a session facade that works with cmp/cmr from EJB 2.0

* based entity beans.

*

*

*

* @ejb.bean name="HRSystem" type="Stateless"

Page 42 of 49

Enhance J2EE component reuse with XDoclets